Nut construction.



E. HAHN. NUT CONSTRUCTION.

PPPPPPPPPPPPPP m) DEG 31,1912.

Patented May 20; 1913.

" Be it known that I, ELGY UNITED STATES PATENTS OFFICE.

ma HAHN, or MILWAUKEE, wrsconsm.

Nor consrzaucrron.

Specification of Letters Patent.

" Patented a a, 1913.

To all whom it may concern HAHN, citizen of the United States, residingat Milwaukee, in the county of Milwaukee and State of Wisconsin, haveinvented certain new and useful Imrovements in Nut Constructions, ofwhich die following is a s ecification.

The present invention re ates to certain new and useful improvements inthe construction of nuts such as are commonly employed in connectionwith bolts and other threaded fastening members, the object of theinvention being to provide a nut of this character which'embodies novelfeatures of construction whereby the nut can be easily and quicklyremoved from the bolt should it become rusted upon or otherwiseprevented from being unscrewed in the usual manner.

A further object of the invention is to provide a nut of this characterwhich is comparatively simple and inexpensive in' its construction,which can be assembled or taken apart, and which can be turned tightlyinto position in the usual manner.

' With these and other objects in view, the

invention consists in certain novel combina-* tions and arrangements ofthe parts as will more fully appear as the description proceeds, thenovel features thereof being pointed out in the appended claims.

Fora full understanding of the invention, reference is to be had to thefollowing description and accompanying drawing, in"

which Figure 1 is a longitudinal sectional view through a nutconstructed in accordance with the invention, the said nut being shownas applied to a bolt, and the said figure being taken on the line 11 ofFig. 2. Fig. 2 is a top plan view of a nut constructed in accordancewith the invention, the said nut being shown as applied to a bolt. Fig.3 is 'a detail perspective view of the two comlemental nut members, thesaid members eing separated. Fig. 4 is a detached perspective view ofthe polygonal collar within which the nut members are assembled,portions of the collar being broken away and shown in section. Fig. 5 isa side elevation of .a nut anda device for withdrawing the polygonalcollar from the nut sections, portions being broken away and shown insection to more clearly illustrate the invention,

and Fig. 6 is a detail view of the locking Corresponding and like partsare referred to in the following description and indicated in all theviews of the drawing by the same reference characters.

Specifically describing the present embodiment of the invention, thenumeral 1 designates a threaded fastenin member such as a bolt which isemploye for holding the'members 2 and 3 together. The nut with which thebolt 1 is capped comprises the two complemental nut members 4 which areadapted to be applied to the bolt from opposite sides thereof. Thesecomplemental nut sections 4 are substantially semi-cylindrical in shape,the inner faces thereof being hollowed out and threaded at 5 so as toengage the" threads of the bolt 1 in the usual manner when the nut isproperly assembled and fitted upon the bolt. One end of each of thenut-sections 4 is provided with an outstanding flange 6, the two flangesproducing a continuous annular flange around the nut when the membersare assembled. It will also be observed that each of the nut sections 4is provided with a lug 7 which is disposed at the-base of the flange 6,the two lugs preferably having a diametrically opposed relation when thecomplemental nut sections are assembled. A collar 8 is adapted to beapplied to the nut sections 4 to hold the same together, the said collarbe ing formed with a cylindrical opening 8 which is adapted toaccurately receive the two semi-cylindrical nut sections 4. Theexterior-of the collar has an angular or polygdiametrically opposednotches 10 are formed I at the base of the said rabbet 9 for engagementwith the In 7. The nut sections may be retained within the collar 8 inany suitable manner such as by being tightl fitted therein or b thehseof some suita is adhesive, and t e nut may then be afpplied to the boltand turned into and out 0 osition in the usual manner, the flanged on sof the nut sections 4 and the rabbeted end of the collar 8 always facininwardly so as to bear against the mem or or object toward which the nutis turned.

Should the nut become rusted upon the bolt or otherwise stick or adhereto the bolt in such a manner that it is impossible to loosen and unscrewthe same, as very frequently happens in railroad construction, it ismerely necessary to forcibly withdraw the collar 8 from the two nutsections 4, after which the nut sections can be readily separated. Forthe urpose of enabling the collar to be readlly withdrawn, sockets 11are formed in oppositely disposed exterior faces thereof, the saidsockets being adapted to be engaged by suitable hooks or claws 12. Thesehooks 12 may be connected to chains 13, suitable links of the chainsbeing adapted to be engaged with fingers 14 projecting from a cap 15.This cap 15 is designed to be applied to the end of the bolt 1 and has ascrew 16 threaded in the end thereof, the extremity of the screw bearingagainst the end of the bolt 1 and the head 17 of the screw having anangular formation. It will be obvious that by turning this-screw 17 thecap 15 may be forced outwardly and the collar 8 of the nut therebywithdrawn from the nut sections 4. The nut sections can then be readilyforced from the bolt, even though they may be rusted in positionthereon.

As previously stated, any suitable means may be provided for holding thepolygonal collar 8 in position upon the nut sect-ions 4, although asshown upon the drawings a locking pin is provided for this purpose. Thislocking pin is formed with a body portion 20 having the shape of atriangular prism, a small pin 21being provided which projectslongitudinally from one end of the body portion 20. This prismatic bodyportion 20 is adapted to be fitted into a radially disposed dove-tailgroove 22 provided in the outer face of the collar 8, and when the bodyportion 20 is in position, the small pin 21 enters an opening 23 in oneof the nut sections 4. One of the edges of the prismatic body portion 20projects outwardly from the face of the collar 8 so as to be engaged bya suitable tool for withdrawing the pin, although the pin 21 has acomparatively small cross section, so thateven though the member may befirmly seated in position, the pin can be readily sheared when force isapplied thereto, as by means of the jack device shown by Fig. 5.

, Having thus described the invention, what I claim as new and desire tosecure by Letters Patent, is

I 1. A nut including a pair of substantiall semicylindrical nut sectionsprovided with threaded inner faces adapted to engage the bolt, and alsoformed at one end thereof with a marginal flange, and a collar having apolygonal exterior and a substantially cylindrical bore ada ted toreceive the nut sections, one end 0 the bore being rabbeted to receivethe flange of the nut sections, means being provided for securing aninterlocking connection between the collar and the nut sections.

2. A nut including a pair of substantiall semicylindrical nut sectionsprovided wit threaded inner faces and formed at one end thereof with anoutstanding flange and also with a lug at the base of the flange, and acollar formed with a polygonal exterior and a substantially cylindricalbore ada ted to receive the nut sections, one end of t e bore beingrabbeted to receive the outstanding flanges of the nut sections andsockets being formed at the base of the rabbeted portion to receive thebefore mentioned lugs of the nut sections.

3. The combination of a bolt, a series of complemental nut. sectionshaving threaded faces adapted to engage the bolt, a collar receiving thenut sections to hold the same together, claws adapted to engage thecollar, a cap for the end of the bolt, means for connecting the nutengaging claws to the cap, and a screw carried by the cap for engagementwith the end of the bolt for forcing the cap outwardly and withdrawingthe collar from the nut sections.

4. A nut including complemental nut sections adapted to be applied tothe bolt from the sides thereof, a collar adapted to receive thecomplemental nut sections for holding the same in operative position,and a locking pin carried by the collar for engagement with the nutsections to hold the collar positively in position.

5. A nut including complemental nut sections provided with threadedfaces adapted to engage the bolt and to be applied thereto from oppositesides thereof, a collar adapted to be fitted upon the nut sect-ions tohold the same in position, the said collar having a dove-tail groove inone end thereof, a looking member including a prismatic body portionadapted to be slipped into the dove-tail groove, and a pin at one end ofthe prismatic body portion adapted to engage one of the nut sections.

6. A nut formed in complemental sections adapted to be applied to thebolt from opposite sides thereof and formed with threaded faces adaptedto engage the bolt, a collar hol adagted to be applied to the nutsections for is applied to the collar for removing I the n g the some ino erative position, and same. 10 a lockmg' member inc uding a bodportion In testimon whereof I aflix my signature whlchis' slidablymounted upon t e collar, in presence o two witnesses.

the said body portion being rovided at one ELGY HAHN. end thereof with'8, reduce pin which is Witnesses:

adapted to eniage one of the nut sections Rum: J. GAPINBKI,

and which can e readily sheared when force MAX J. BROZEWBKI.

